\Header{panel.levelplot}{Default Panel Function for levelplot}
\keyword{dplot}{panel.levelplot}
\begin{Description}\relax
This is the default panel function for \code{levelplot}.\end{Description}
\begin{Usage}
\begin{verbatim}
panel.levelplot(x, y, z, zcol,
                subscripts,
                at = mean(z),
                shrink,
                labels = NULL,
                label.style = c("mixed", "flat", "align"),
                contour = TRUE,
                region = TRUE,
                col = add.line$col,
                lty = add.line$lty,
                lwd = add.line$lwd,
                cex = add.text$cex,
                font = add.text$font,
                col.text = add.text$col,
                ...,
                col.regions)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x, y, z}] variables defining the plot
\item[\code{zcol}] color numbers for each x,y combination
\item[\code{subscripts}] which points to draw
\item[\code{at}] cut points
\item[\code{shrink}] either a numeric vector of length 2, or a list with
components x and y which are numeric vectors of length 2.
\item[\code{labels}] contour labels
\item[\code{label.style}] 
\item[\code{contour}] logical
\item[\code{region}] logical
\item[\code{col, lty, lwd}] graphical parameters for contour lines
\item[\code{cex, font, col.text}] graphical parameters for contour labels
\item[\code{...}] extra parameters 
\item[\code{col.regions}] colors indexed by zcol
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
The same function is used for both \code{levelplot} and
\code{contourplot} (which differ only in default values of some
arguments). Most arguments are self-evident. \code{label.style}
controls choice of how label positions are determined (this is not
very sophisticated yet). The \code{shrink} argument allows the
rectangles to be resized, proportional to the z-value. The
specification can be made separately for widths and heights, in terms
of a length 2 numeric vector, which gives the minimum and maximum
proportion of shrinkage (corresponding to min and max of z).\end{Details}
\begin{Author}\relax
Deepayan Sarkar \email{deepayan@stat.wisc.edu}\end{Author}
\begin{SeeAlso}\relax
\code{\Link{levelplot}}\end{SeeAlso}

